Commenced its activities as a family company in 1980 in Ankara, Tırtaş carried out successful works in the field of international transportation at first. Then, the company started to produce ready-mixed concrete by establishing a ready-mixed concrete facility in Yenibosna. Gökhan Şahin, Chairman of the Board of Directors of the Company, said that the facility they established in Yenibosna was operated by them from 1997 to 2005. Having said they went into a cooperation with Akçansa, Şahin continued his words “After running the ready-mix concrete plant for a while, we rented it to Akçansa. Our facilities and equipment belong to us and we continue production at the standards determined by Akçansa.” Şahin stated that the operations of the company in the field of international transportation continue and mentioned that “In 2010, we continued to provide services with our fleet of international trucks with a total of 75 vehicles. We work with Goodyear, Eczacıbaşı, Akçansa companies in the transportation field. Moreover, our works for cement and slag transportation in Büyükçekmece, Abmarlı, Çanakkale and Karabük factories of Akçansa with our 35 cement trailers in the fields of cement and sand transportation industry. Şahin points out that the ready-mixed concrete produced in the concrete plant is also used in prestige projects in Istanbul such as Polat Tower - Fuya, Polat Bosphorus Houses, IMM Bakırköy Bridge Interchange, Beşiktaş Municipality Shopping Center and Wedding Hall – Fulya. Tirtaş, which also provides a concrete pump service in addition to ready-mixed concrete transportation, added the KCP brand concrete pump, distributed by Enka Pazarlama, to the vehicle park in the near term. Stating that they have been in cooperation with Enka Pazarlama for long years, Şahin stated that “Our relationship with Enka dates back to the concrete pump. In the 2000s, Schmitz had bought trailers and Iveco vehicles.” He also stated that they have started to make investments about concrete pumps and bought KCP branded concrete pump from Enka Pazarlama “We didn't make much research on concrete pump. Since we have worked with Enka for many years, we have chosen the KCP brand. Obviously we don't know much about the brand but we know Enka. So we can say that we prefer this product because it is supported by Enka.”